Custom Glass Spacers: Thickness 0.1 – 10 mm held to +/-0.005 mm. Single-piece prototypes to production volumes, quoted from your drawing.
custom glass spacers are ordered for optical path length control and stack assembly. The geometry envelope is Thickness 0.1 – 10 mm held to +/-0.005 mm, held to parallelism 2 um, in fused silica, Borofloat 33, quartz and soda-lime.
The numbers
| Geometry | Glass Spacers |
|---|---|
| Size envelope | Thickness 0.1 – 10 mm held to +/-0.005 mm |
| Key tolerance | parallelism 2 um |
| RFQ inputs | PDF/DXF/STEP drawing, quantity brackets, surface and edge spec |
Design guidance
Three items decide most of the cost and lead time on this work:
- Hold the controlling dimension (parallelism 2 um) and let secondary dimensions carry standard tolerance – it is the single biggest cost lever.
- Over-specification is the quiet budget killer: a 20/10 scratch-dig face costs roughly three times an 80/50 face, so grade each surface individually.
The full rules live in our tolerance design guide and holes and edges design guide.
Process window
Production route: grinding, lapping, double-side polishing – selected per geometry and volume. Edge condition: ground perimeter, squareness 0.02 mm.
Typical applications
The recurring buyers of custom glass spacers: aerospace optics (sensor windows, star-tracker flats, radiation-tolerant ports); microfluidic devices (chips, manifolds, via plates, bonded stacks); led packaging (groove covers, phosphor carriers, package windows).
The fastest route to a quote is geometry: use the 3D builder below, draw a dimensioned 2D drawing from it, or open the site-wide custom glass machining 3D + 2D builder for fully custom parts.
Engineers scoping this work usually also review holes and edges design guide, custom ITO glass, infrared windows.
Frequently asked questions
Do parts ship with inspection data?
Dimensional reports, surface certificates and material certs per melt are available; specify the level on the RFQ.
What sizes are available for glass spacers?
Thickness 0.1 – 10 mm held to +/-0.005 mm, held to parallelism 2 um.
Is there a minimum order for custom glass spacers?
No. Single prototypes are accepted, and pricing steps down at 10, 100 and 1,000 pieces.
How fast can prototypes ship?
Machined prototypes ship in 5 – 10 working days. Coated or bonded parts add 1 – 2 weeks depending on queue slots.
What files do you need for a quote?
A dimensioned PDF plus DXF or STEP geometry. If only a sketch exists, our drawing review service formalizes it before quoting.
Specifications on this page were last reviewed by our engineering team in September 2026.